<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<script type="text/javascript">
			var reg = /^(?:[A-z0-9_-])+\@(?:[A-z0-9_\-\.]+\.(?:[A-z]{2,4}))$/;
		</script>
	</body>
</html>
